<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>区域居中</title>
    <style>
        body{
            margin: 0;
        }
        .c1{
            width:800px;
            background-color: #A5D6D9;
            height: 1000px;
            margin:0 auto;
        }
    </style>
</head>
<body>
<div class="c1"></div>
<!--    <div style="width:500px; background-color: orange; text-align: center;">-->
<!--        哪吒2之魔童闹海-->
<!--    </div>-->
</body>
</html>